Does anyone know what is the biggest feature of Harmani piano?

Harmani piano is characterized by its rich configuration. First, the traditional piano-making techniques in Europe are maintained, such as wooden sound boards, German hexagonal strings and mahogany hammers. Second, it has a number of national patents, such as embedded string pillow, user-friendly keyboard with adjustable touch, selective sound extension of middle pedal, manual lifting of weak sound and so on. Therefore, Hamani piano is praised as "a good visible piano" by people inside and outside the industry.